Finding the Fourth Proportional to 1,409.89, 2,115.49 and 629.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409.89 : 2,115.49 = 629.82 : x
2. Step 2: Convert to fraction form
   1,409.89/2,115.49 = 629.82/x
3. Step 3: Cross multiply
   1,409.89x = 2,115.49 × 629.82
4. Step 4: Simplify right side
   1,409.89x = 1,332,377.91
5. Step 5: Solve for x
   x = 1,332,377.91/1,409.89
6. Step 6: Final answer
   x = 945.02